The significant accounting policies of our Company, which are summarized below, are consistent with accounting principles generally accepted in the United States (“U.S. GAAP”) and reflect practices appropriate to the business in which we operate. Unless indicated otherwise, the information in the Notes to the Consolidated Financial Statements relates to our operations.

We have prepared the accompanying financial data for the three months ended March 31, 2022 and 2021 pursuant to the rules and regulations of the United States Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. The accompanying financial data and information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021 (“2021 Annual Report”). The Condensed Consolidated Balance Sheet as of December 31, 2021 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by U.S. GAAP for complete financial statements.

In the opinion of management, the accompanying condensed consolidated financial statements contain all normal and recurring adjustments necessary to present fairly our Condensed Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021, Condensed Consolidated Statements of Operations for the three months ended March 31, 2022 and 2021, Condensed Consolidated Statements of Changes in Stockholders’ Equity for the three months ended March 31, 2022 and 2021, and Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2022 and 2021.

The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our financial statements and accompanying notes. Management bases its estimates on historical experience and various other assumptions believed to be reasonable. Although these estimates are based on management’s best knowledge of current events and actions that may impact us in the future, actual results may vary from the estimates. Estimates include, but are not limited to, the establishment of reserves for accounts receivable, sales returns, inventory obsolescence and warranty claims; the useful lives of property and equipment; valuation allowance for net deferred taxes; the cost and offsetting income related to sub-leased property; and stock-based compensation. In addition, estimates and assumptions associated with the determination of the fair value of financial instruments and evaluation of long-lived assets for impairment requires considerable judgment. Actual results could differ from those estimates and such differences could be material.

We have certain customers whose net sales individually represented 10% or more of our total net sales, or whose net trade accounts receivable balance individually represented 10% or more of our total net trade accounts receivable; we have certain suppliers, which individually represent 10% or more of our total purchases, or whose trade accounts payable balance individually represented 10% or more of our total trade accounts payable balance, as follows:

For the three months ended March 31, 2022, sales to our primary distributor for the U.S. Navy, a U.S. Navy shipbuilder, and a commercial building systems provider, accounted for approximately 15%, 21%, and 19% of net sales, respectively. When sales to our primary distributor for the U.S. Navy are combined with sales to shipbuilders for the U.S. Navy, total net sales of products for the U.S. Navy comprised approximately 37% of net sales for the same period. For the three months ended March 31, 2021, sales to our primary distributor for the U.S. Navy and a regional commercial lighting retrofit company accounted for approximately 50% and 11% of net sales, respectively. When sales to our primary distributor for the U.S. Navy are combined with sales to shipbuilders for the U.S. Navy, total net sales of products for the U.S. Navy comprised approximately 57% of net sales for the same period.

A U.S. Navy shipbuilder, a distributor to the U.S. Department of Defense and a commercial building systems provider accounted for approximately 11%, 10%, and 28% of net trade accounts receivable, respectively, at March 31, 2022. At December 31, 2021, a distributor to the U.S. Department of Defense accounted for 20% of our net trade accounts receivable and a shipbuilder for the U.S. Navy accounted for 36% of our net trade accounts receivable.

In June 2016, the Financial Accounting Standards Board issued Accounting Standard Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which significantly changes the accounting for credit losses on instruments within its scope. The new guidance introduces an approach based on expected losses to estimate credit losses on certain financial instruments, including trade receivables, and requires an entity to recognize an allowance based on its estimate of expected credit losses rather than incurred losses. For smaller reporting companies, this standard will be effective for interim and annual periods starting after December 15, 2022 and will generally require adoption on a modified retrospective basis. We are in the process of evaluating the impact of the standard but do not expect any material financial statement impact upon adoption.

Net sales include revenues from sales of products and shipping and handling charges, net of estimates for product returns. Revenue is measured at the amount of consideration we expect to receive in exchange for the transferred products. We recognize revenue at the point in time when we transfer the promised products to the customer and the customer obtains control over the products. Distributors’ obligations to us are not contingent upon the resale of our products. We recognize revenue for shipping and handling charges at the time the goods are shipped to the customer, and the costs of outbound freight are included in cost of sales. We provide for product returns based on historical return rates. While we incur costs for sales commissions to our sales employees and outside agents, we recognize commission costs concurrent with the related revenue, as the amortization period is less than one year. We do not incur any other incremental costs to obtain contracts with our customers. Our product warranties are assurance-type warranties, which promise the customer that the products are as specified in the contract. Therefore, the product warranties are not a separate performance obligation and are accounted for as described below. Sales taxes assessed by governmental authorities are accounted for on a net basis and are excluded from net sales.

Our trade accounts receivable consists of amounts billed to and currently due from customers. Our customers are concentrated in the United States. In the normal course of business, we extend unsecured credit to our customers related to the sale of our products. Credit is extended to customers based on an evaluation of the customer’s financial condition and the amounts due are stated at their estimated net realizable value. We utilize a third-party account receivable insurance program with a very high credit worthy insurance company where we have the large majority of the accounts receivable insured with a portion of self-retention. This third party also provides credit-worthiness ratings and metrics that significantly assists us in evaluating the credit worthiness of both existing and new customers. We maintain allowances for sales returns and doubtful accounts receivable to provide for the estimated number of account receivables that will not be collected. The allowance is based on an assessment of customer creditworthiness and historical payment experience, the age of outstanding receivables, and performance guarantees to the extent applicable. Past due amounts are written off when our internal collection efforts have been unsuccessful, and payments subsequently received on such receivables are credited to the allowance for doubtful accounts. We do not generally require collateral from our customers.

Our standard payment terms with customers are net 30 days from the date of shipment, and we do not generally offer extended payment terms to our customers, but exceptions are made in some cases for major customers or with particular orders. Accordingly, we do not adjust trade accounts receivable for the effects of financing, as we expect the period between the transfer of product to the customer and the receipt of payment from the customer to be in line with our standard payment terms.

All of our long-lived fixed assets are located in the United States. For the three months ended March 31, 2022, 2% of sales were attributable to customers outside the United States. For the three months ended March 31, 2021, there were less than 1% of sales attributable to customers outside the United States. The geographic location of our net sales is derived from the destination to which we ship the product.

Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period, excluding the effects of any potentially dilutive securities. Diluted loss per share gives effect to all dilutive potential shares of common stock outstanding during the period. Dilutive potential shares of common stock consist of incremental shares upon the exercise of stock options, warrants and convertible securities, unless the effect would be anti-dilutive.

As a result of the net loss we incurred for the three months ended March 31, 2022, warrants and convertible securities representing approximately 16 thousand and 175 thousand shares of common stock, respectively, were excluded from the basic loss per share calculation because their inclusion would have been anti-dilutive.

As a result of the net loss we incurred for the three months ended March 31, 2021, options, restricted share units, warrants and convertible securities representing approximately 79 thousand, 2 thousand, 106 thousand and 519 thousand shares of common stock, respectively, were excluded from the basic loss per share calculation as their inclusion would have been anti-dilutive.

We warrant our commercial and MMM LED products and controls for periods generally ranging from five to ten years and from one to five years for UVCD products. Warranty settlement costs consist of actual amounts expensed for warranty, which are largely a result of the cost of replacement products provided to our customers. A liability for the estimated future costs under product warranties is maintained for products under warranty based on the actual claims incurred to date and the estimated nature, frequency, and costs of future claims. These estimates are inherently uncertain and changes to our historical or projected experience may cause material changes to our warranty reserves in the future. We continuously review the assumptions related to the adequacy of our warranty reserve, including product failure rates, and make adjustments to the existing warranty liability when there are changes to these estimates or the underlying replacement product costs, or the warranty period expires.

In December 2021, we completed a private placement (the “December 2021 Private Placement”) with certain institutional investors for the sale of 1,193,185 shares of our common stock at a purchase price of $3.52 per share. We also sold to the same institutional investors (i) pre-funded warrants (“Pre-Funded Warrants”) to purchase 85,228 shares of common stock at an exercise price of $0.0001 per share and (ii) warrants (collectively with the Pre-Funded Warrants, the “December 2021 Warrants”) to purchase up to an aggregate of 1,278,413 shares of common stock at an exercise price of $3.52 per share. In connection with the December 2021 Private Placement, we paid the placement agent commissions of $360 thousand, plus $42 thousand in expenses, and we also paid legal, accounting and other fees of $97 thousand. Total offering costs of $499 thousand have been presented as a reduction of additional paid-in capital and have been netted within equity in the Consolidated Balance Sheet as of December 31, 2021. Net proceeds to us from the December 2021 Private Placement were approximately $4.0 million. We determined the exercise price of the Pre-Funded Warrants to be nominal and, as such, have considered the 85,228 shares underlying them to be outstanding effective December 16, 2021, for purposes of calculating net loss per share.

In January 2022, all of the Pre-Funded Warrants were exercised. As of March 31, 2022, December 2021 Warrants to purchase an aggregate of 1,278,413 shares remained outstanding, with an exercise price of $3.52 per share. The exercise of the remaining December 2021 Warrants outstanding could provide us with cash proceeds of up to $4.5 million in the aggregate.

In June 2021, we completed a registered direct offering of 990,100 shares of our common stock to certain institutional investors, at a purchase price of $5.05 per share (the “June 2021 Equity Offering”). We paid the placement agent commissions of $400 thousand, plus $51 thousand in expenses, in connection with the June 2021 Equity Offering and we also paid legal and other fees of $19 thousand related to the June 2021 Equity Offering. Total offering costs of $470 thousand have been presented as a reduction of additional paid-in capital and have been netted within equity in the Condensed Consolidated Balance Sheet as of December 31, 2021. Net proceeds to us from the June 2021 Equity Offering were approximately $4.5 million.

In January 2020, we completed a registered direct offering of 688,360 shares of our common stock to certain institutional investors, at a purchase price of $3.37 per share. We also sold, to the same institutional investors, warrants to purchase up to 688,360 shares of common stock at an exercise price of $3.37 per share (the “Investor Warrants”) in a concurrent private placement (together with the concurrent registered direct offering, the “January 2020 Equity Offering”) for a purchase price of $0.625 per warrant. In addition, we issued warrants to the placement agent to purchase up to 48,185 shares of common stock at an exercise price of $4.99 per share (together with the Investor Warrants, the “January 2020 Warrants”).

As of March 31, 2022, January 2020 Warrants to purchase an aggregate of 229,414 shares remain outstanding with a weighted average exercise price of $3.67 per share. The exercise of these warrants could provide us with cash proceeds of up to $0.8 million in the aggregate. During the three months ended March 31, 2022, none of these warrants were exercised.

As of March 31, 2021, January 2020 Warrants to purchase an aggregate of 310,860 shares remained outstanding with a weighted average exercises price of $3.59 per share. During the three months ended March 31, 2021, 156,446 January 2020 Warrants were exercised resulting in total proceeds of $527 thousand.

The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value, giving the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below. We classify the inputs used to measure fair value into the following hierarchy:


Level 1			Unadjusted quoted prices in active markets for identical assets or liabilities.
Level 2			Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability.
Level 3			Unobservable inputs for the asset or liability.

The carrying amounts of certain financial instruments including cash, accounts receivable, accounts payable, and accrued liabilities approximate fair value due to their short maturities. Based on borrowing rates currently available to us for loans with similar terms, the carrying value of borrowings under our revolving credit facilities also approximates fair value.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. In determining the appropriate levels, we perform a detailed analysis of the assets and liabilities whose fair value is measured on a recurring basis. We review and reassess the fair value hierarchy classifications on a quarterly basis. Changes from one quarter to the next related to the observability of inputs in a fair value measurement may result in a reclassification between fair value hierarchy levels. There were no reclassifications for all periods presented.